Pixar mystery movie for Thanksgiving 2013

From Darkhorizons.com:

"Pixar has "Brave" next summer and "Monsters University" for June 2013. What comes after that though? Deadline reports that Disney has set a release date for that project - November 27th 2013. There's no title or specific details of who's involved other than the fact that it's an original, non-sequel Pixar film.
"Up" director Pete Docter and "Toy Story 3" writer Michael Arndt were both linked to an unknown Pirxar project last year, could this be it?"

"In many ways, the work of a critic is easy. We risk very little yet enjoy a position over those who offer up their work and their selves to our judgment. We thrive on negative criticism, which is fun to write and to read. But the bitter truth we critics must face, is that in the grand scheme of things, the average piece of junk is probably more meaningful than our criticism designating it so. But there are times when a critic truly risks something, and that is in the discovery and defense of the new. The world is often unkind to new talent, new creations, the new needs friends." - Anton Ego